The Use of Advanced Environmentally Friendly Systems in the Insulation and Reconstruction of Buildings

Zach, Jiří; Novák, Vítězslav; Peterková, Jitka; Bubenı́k, Jan; Košir, Mitja; Božiček, David; Krejza, Zdeněk

doi:10.3390/buildings13020404

Cited by 3 publications

(2 citation statements)

References 32 publications

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“…This is due to the fact that in the constructive solutions of a wall, floor, or roof, the thermal insulating material is responsible for the reduction of energy losses by transmission, eliminating a significant amount of energy consumption for the heating of the residential park [48]. In turn, this reduction in consumption reduces environmental impacts, since, worldwide, heating in homes is generated by primary energy extraction, biomass burning, or the use of fossil fuels [49,50]. .…”

Section: Thermal Conductivitymentioning

confidence: 99%

Valorization of Wheat Crop Waste in Araucanía, Chile: Development of Prototype of Thermal Insulation Material for Blowing Technique and Geographical Analysis

2023

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Houses in the operational stage consume around 40% of the world’s energy, and most of it is consumed by air conditioning. This generates several problems, especially in cities, where biomass combustion is the most widely used form of heating. For this reason, environmental regulation works in parallel with energy efficiency, where efficient and low-impact thermal insulating materials are key to reduce the energy demand and fuel consumption to generate comfort in dwellings. This work considers the valorization of wheat straw from the Araucanía region of Chile, to develop a prototype for a thermal insulating material applied through the blowing technique. The results show the insulation potential of the fiber, which, in post-chopping conditions and at an average density of 80 [kg/m3], has thermal conductivity of 0.034 [W/mK]. This value is much better than that of glass wool and other inorganic materials sold in the Chilean market. In addition, the developed material can be incorporated into partitions using the blowing technique, improving the execution time for the thermal insulation section. Finally, it is indicated that a good option to install a processing plant is in the central valley of the region, specifically in the communes of Victoria and Perquenco.

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Section: Thermal Conductivitymentioning

confidence: 99%

Valorization of Wheat Crop Waste in Araucanía, Chile: Development of Prototype of Thermal Insulation Material for Blowing Technique and Geographical Analysis

2023

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“… the choice of the shape, size, and orientation [15][16][17][18][19] of the building and its rooms;  the distance between buildings [20];  the combination and placement of the building on the general urban plan [20];  optimizing the wind effect on the buildings [20];  increasing the overall thermal resistance to heat transfer of building envelopment [21][22] including heat insulation [13,[22][23][24][25][26][27][28], reducing the area and using energy-efficient glazing [28][29][30], decreasing thermal bridges [31] etc. ;…”

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confidence: 99%

Energy Efficiency Issues in Buildings: Analysis of World Practice

Gasimov,

Mammadov,

Akbarova

et al. 2023

VOTHP

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At present, the volume of world energy consumption is continuously and rapidly increasing, which is a consequence of the industrialization process, population growth, increase in energy costs for the extraction of natural resources, etc. Therefore, the importance of solving the problem of energy efficiency is of paramount importance for modern civilization. In this work, there is an analysis of international experience of energy efficient construction. The main directions of energy-efficient development are highlighted. It’s shown that the classical method of heat loss calculations wrongly takes into account the wind effect. The more correct one is required. At the same time, it is worth applying linguistic variables and fuzzy logic, which adequately describe states that are described by verbal statements, and not by numerical values. In conclusion, the most emerging tasks for our Republic are selected: optimal placement of the building on the general plan of the city, incl. maintaining the distance between buildings under the construction and urban-planning regulations; proper heat insulation of the building envelope by the orientation of facades and depending on the climatic parameters of the outside air; air-tightening of building avoiding in- and exfiltration; maximum possible automation of engineering systems up to integration from smart house to smart city level; modernization and optimization of the operation of engineering systems; maximum use of renewable and secondary (such as exhaust air) energy sources; rejection of the classical calculation method of heat loss estimation, which takes into account the effect of wind speed, and to develop a new methodology.

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Recycling Textile Waste to Enhance Building Thermal Insulation and Reduce Carbon Emissions: Experimentation and Model-Based Dynamic Assessment

et al. 2023

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By enhancing the thermal properties of cement-based building materials, energy consumption and carbon dioxide (CO2) emissions related to space conditioning in buildings can be alleviated. This study aims to present cement-based composites reinforced by textile fibers for application in building and construction. Several lightweight coating mortars were produced by partially replacing the sand in the mix with different percentages of textile waste. Mechanical and thermal characterizations of the reinforced cementitious composites were performed. The results showed that the thermal conductivity of cementitious compounds decreased as the proportion of reinforcing material in the mixture increased. In terms of mechanical properties, the textile slightly reduced the compressive strength of cementitious mortar, while it improved the flexural strength. A numerical study was then performed to derive the actual impact of these reinforced materials on the thermal behavior of a building element using COMSOL Multiphysics. Numerous configurations of walls coated with different mortar mixtures were studied. The results showed that coating both sides of a building wall with 20 mm of textile-reinforced mortar reduced the internal temperature by 1.5 °C. Thus, the application of these thermally improved mortars as coating mortars appears to be a relevant solution to enhance the thermal performance of buildings.

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The Use of Advanced Environmentally Friendly Systems in the Insulation and Reconstruction of Buildings

Cited by 3 publications

References 32 publications

Valorization of Wheat Crop Waste in Araucanía, Chile: Development of Prototype of Thermal Insulation Material for Blowing Technique and Geographical Analysis

Valorization of Wheat Crop Waste in Araucanía, Chile: Development of Prototype of Thermal Insulation Material for Blowing Technique and Geographical Analysis

Energy Efficiency Issues in Buildings: Analysis of World Practice

Recycling Textile Waste to Enhance Building Thermal Insulation and Reduce Carbon Emissions: Experimentation and Model-Based Dynamic Assessment

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